Page 127 - 2018_IFC

INTERIOR FINISH, DECORATIVE MATERIALS AND FURNISHINGS

803.4 Fire-retardant coatings. The required flame spread or of Section 803.5.1.1 when tested in the manner intended
smoke-developed index of surfaces in existing buildings shall for use in accordance with the Method B protocol of
be allowed to be achieved by application of approved fire- NFPA 265 using the product mounting system, including
retardant coatings, paints or solutions to surfaces having a adhesive. Test specimen preparation and mounting shall
flame spread index exceeding that allowed. Such applications be in accordance with ASTM E2404.
shall comply with NFPA 703 and the required fire-retardant 803.5.1.1 Acceptance criteria for NFPA 265 Method
properties shall be maintained or renewed in accordance with B test protocol. Where testing to NFPA 265, the inte-
the manufacturer’s instructions. The fire-retardant paint, rior finish shall comply with the following:
coating or solution shall have been assessed by testing over 1. During the 40-kW exposure, flames shall not
the same substrate to be used in the application.
spread to the ceiling.
803.5 Textile wall coverings. Where used as interior wall 2. The flame shall not spread to the outer extremi-
finish materials, textile wall coverings, including materials ties of the samples on the 8-foot by 12-foot (203
having a woven, nonwoven, napped, tufted, looped or similar by 305 mm) walls.
surface, shall be tested in the manner intended for use, using
the product mounting system, including adhesive, and shall 3. Flashover, as defined in NFPA 265, shall not
comply with the requirements of Section 803.1.1, 803.5.1 or occur.
803.5.2. 4. For newly introduced wall coverings, the total
803.5.1 Room corner test for textile wall coverings and smoke released throughout the test shall not
2
expanded vinyl wall coverings. Textile wall coverings exceed 1,000 m .
and expanded vinyl wall coverings shall meet the criteria
TABLE 803.3
INTERIOR WALL AND CEILING FINISH REQUIREMENTS BY OCCUPANCY k
SPRINKLERED l NONSPRINKLERED
Corridors and Corridors and
GROUP Interior exit stairways enclosure for exit Rooms and Interior exit stairways enclosure for exit Rooms and
and ramps and exit access stairways enclosed spaces c and ramps and exit access stairways enclosed
passageways a, b passageways a, b spaces c
and ramps and ramps
A-1 and A-2 B B C A A d B e
f
A-3 , A-4, A-5 B B C A A d C
B, E, M, R-1, R-4 B C m C A B m C
F C C C B C C
H B B C g A A B
I-1 B C C A B B
I-2 B B B h, i A A B
I-3 A A j C A A B
I-4 B B B h, i A A B
R-2 C C C B B C
R-3 C C C C C C
S C C C B B C
U No Restrictions No Restrictions
2
For SI: 1 inch = 25.4 mm, 1 square foot = 0.0929 m .
a. Class C interior finish materials shall be allowed for wainscoting or paneling of not more than 1,000 square feet of applied surface area in the grade lobby
where applied directly to a noncombustible base or over furring strips applied to a noncombustible base and fireblocked as required by Section 803.11 of the
International Building Code.
b. In exit enclosures of buildings less than three stories in height of other than Group I-3, Class B interior finish for nonsprinklered buildings and Class C for
sprinklered buildings shall be permitted.
c. Requirements for rooms and enclosed spaces shall be based on spaces enclosed by partitions. Where a fire-resistance rating is required for structural elements,
the enclosing partitions shall extend from the floor to the ceiling. Partitions that do not comply with this shall be considered as enclosing spaces and the rooms
or spaces on both sides shall be considered as one. In determining the applicable requirements for rooms and enclosed spaces, the specific occupancy thereof
shall be the governing factor regardless of the group classification of the building or structure.
d. Lobby areas in Group A-1, A-2 and A-3 occupancies shall be not less than Class B materials.
e. Class C interior finish materials shall be allowed in Group A occupancies with an occupant load of 300 persons or less.
f. In places of religious worship, wood used for ornamental purposes, trusses, paneling or chancel furnishing shall be allowed.
g. Class B material is required where the building exceeds two stories.
h. Class C interior finish materials shall be allowed in administrative spaces.
i. Class C interior finish materials shall be allowed in rooms with a capacity of four persons or less.
j. Class B materials shall be allowed as wainscoting extending not more than 48 inches above the finished floor in corridors.
k. Finish materials as provided for in other sections of this code.
l. Applies where the vertical exits, exit passageways, corridors or rooms and spaces are protected by an approved automatic sprinkler system installed in
accordance with Section 903.3.1.1 or 903.3.1.2.
m.Corridors in ambulatory care facilities shall have a Class B or better interior finish material.

94 2018 INTERNATIONAL FIRE CODE ®
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